The outstanding acoustics of our cardiology-grade stethoscope sound even better with up to 40x amplification (at peak frequency, compared to analog mode). Hearing subtle sounds to help you diagnose is now even easier.
Help cut out distracting noises common to hectic environments with our active noise cancellation technology. It can help you listen by reducing unwanted outside background noise so you can focus on listening to what’s important: your patient and their body sounds. Hear the difference
Our snap tight, soft-sealing ear tips conform to ears to create an excellent acoustic seal while providing a comfortable fit. That means you can listen confidently and comfortably.
With one button, you can quickly toggle between analog and amplified listening modes to suit your needs. Plus, its two tunable diaphragms (adult and pediatric) allow you to listen for both high and low frequency sounds without repositioning the chestpiece.
Download the Eko App and pair it with the 3M™ Littmann® CORE Digital Stethoscope, so you can screen like never before. Free features on the Eko App include the ability to see, record and share sounds. AI Murmur Analysis available with subscription.
With an angled headset that aligns for a proper fit with your ear canals and a chestpiece you can hold the way you want to, the 3M™ Littmann® CORE Digital Stethoscope was designed for comfort during patient assessments.
The FDA-cleared 3M™ Littmann® CORE Digital Stethoscope works with Eko software on iOS and Android devices, giving you a HIPAA compliant means to save and annotate 15, 30, 60 or 120-second recordings in a secure dashboard. And now, with the help of the recently-upgraded Eko app, the 3M™ Littmann® CORE digital stethoscope works harder for clinicians making any patient encounter a greater opportunity to detect heart murmurs without extra effort and cost.
Learn more about getting started with your 3M™ Littmann® CORE Digital Stethoscope.
See how the 3M™ Littmann® CORE Digital Stethoscope can help you detect heart murmurs with AI
Watch and learn how you can perform live telehealth appointments with the 3M™ Littmann® CORE Digital Stethoscope.
Read the latest Littmann Stethoscope blog articles
The 3M™ Littmann® CORE Digital Stethoscope comes pre-assembled for your convenience and is tested to ensure proper setup. It offers the superior acoustics, comfort, and quality of the 3M™ Littmann® Cardiology IV™ Stethoscope, plus the added benefit of up to 40x amplification (at peak frequency, vs. analog mode), active noise cancellation, and sound wave visualization using a companion app on a mobile device. In addition, in certain geographies including the United States, the Eko App enables the use of Eko’s FDA-cleared software features to detect the presence of suspected murmurs – free of charge.
When you purchase the 3M™ Littmann® CORE Digital Stethoscope, we ensure proper assembly, and you receive a single point of service and support from 3M™ Littmann® Stethoscopes.
When the 3M Littmann CORE Digital Stethoscope is off, it functions as a mechanical (analog, not amplified) stethoscope. To turn the 3M Littmann CORE Digital Stethoscope amplified mode on, press the power toggle in. The LED light will begin flashing. You will now hear amplified and filtered sound in the eartips.
The CORE digital unit LED light provides information about the status of the device:
(You do not need to pair with the app for the amplification to work. You need to pair with the app to view sound wave visualization and use features such as sound recording, sharing, and AI-enabled screening.)
(Note: The CORE digital unit will not function while it is charging.)
The 3M Littmann CORE Digital Stethoscope will go into standby mode after 5 minutes of inactivity. To turn the device back on, toggle the power off and back on. **
Ensure you are listening with the diaphragm on the active side of the chestpiece. Only one side of the chestpiece is acoustically active at a time, identified by a mark on the stem. Rotate the chestpiece to change which side is active.
Before placing the eartips in your ears, make sure they point forward, away from you. This ensures that the eartubes will align with your ear canals for comfort and maximum sound transmission. It is also important to ensure that the fit of the eartips is creating a proper seal in the ear canals. If you are not achieving a proper seal, please perform the headset adjustment to suit your personal preference for comfort. If necessary, replace the ear tips with the smaller size that were provided in the box.
See “Using Your Stethoscope” at Littmann.com for more details.
You may be able to listen to sounds via wireless headphones by pairing your Littmann CORE Stethoscope to the Eko App on your mobile device and using the ‘Play from Headphones’ feature in the Eko app Audio Settings to stream sound wirelessly into the headphones from the phone. The Littmann CORE Digital Stethoscope does not pair directly with wireless headphones.
If using the Eko App and external speakers or headphones to listen live, we recommend using plug-in speakers or headphones for best sound quality. Wireless headphones may yield varied sound quality, see more information here.
If possible, perform auscultation in a quiet environment. While the Littmann CORE Digital Stethoscope has active noise cancellation, some environmental noise will still be audible during auscultation.
3M tunable diaphragm technology lets you hear different frequency sounds by simply adjusting the pressure on the chestpiece. Hold the chestpiece with light pressure on the patient’s chest to hear low frequency sounds; press a little more firmly to hear higher frequency sounds. If using the Eko App and external speakers or headphones to listen live, we recommend using plug-in speakers or headphones for best sound quality. Wireless headphones may yield varied sound quality, see more information here.
The 3M Littmann CORE Digital Stethoscope cannot pair directly with hearing aids. However, if your hearing aids can connect to your phone, you can utilize the ‘Play from Headphones’ feature in the app to stream sound wirelessly into the hearing aids from the phone. It is vital that you validate with your audiologist that your hearing aids can produce the necessary frequencies to perform a diagnostic auscultation. Find more information here.
App version released in March 2022 in the United States: The 3M Littmann CORE Digital Stethoscope includes active noise cancellation that can be turned off or on through the Menu -> CORE Settings in the Eko App. The default setting in the app is OFF. Also, turning the stethoscope off will turn off active noise cancellation.
Other versions: The 3M Littmann CORE Digital Stethoscope includes active noise cancellation that can be turned off or on through the Settings menu in the Eko App. The default setting in the app is OFF. Also, turning the stethoscope off will turn off active noise cancellation.
App version released in March 2022 in the United States: In the Eko App, tap “Patients.” Then select the patient and then the recording. Finally, tap “Share” and follow the prompts. The recipient does not need to have an Eko account to receive and open these files.
Other versions: In the Eko App, go to “Patients” > “Select patient” > “Edit”, and tap “Share patient”. You may then enter the recipient’s email address and the sound recordings will be sent to them. Note that the recipient must also have an Eko account to see shared patient recordings.
Charge your 3M Littmann CORE Digital Stethoscope or CORE Digital Attachment when the yellow light starts blinking. Insert the supplied micro-USB cable into the USB port of the device and plug the other (USB-A) end into a UL-certified USB wall charger (max 5 volts). The device LED will turn solid yellow, signifying that it is charging. The LED will change to solid green when the device is fully charged.
To fully charge the battery, it should take about 2.5 hours when starting from a fully depleted battery. When fully charged, the stethoscope should provide 8 hours of continuous digital use. We recommend turning the digital unit OFF between each use to maximize battery life.
NOTE: The digital unit will not turn on while it is plugged in and charging. There are no user-serviceable parts in the digital unit, and it is not designed to be opened by the user.
The digital unit has a 5-minute standby mode to conserve battery life. The white LED on the unit will disappear when the digital unit goes into standby mode and the toggle will remain flat with the surface of the volume buttons (i.e., in the “ON” position).
To power the digital unit back ON, push the toggle to the OFF and then the ON position. The white light will appear to indicate the device is ON.
The sound level can be amplified in 7 increments to provide up to 40x amplification (at peak frequency, versus analog mode) when listening with the stethoscope earpieces. Increase the volume level by clicking the plus volume button on the side of the unit and decrease the volume level by clicking the minus volume button on the side of digital unit. If you are using headphones to listen to the sounds through your smart phone or tablet, you will need to adjust your device’s volume in the usual manner; the stethoscope’s volume buttons will have no effect on listening volume in this case. Note: Changing the volume on the digital unit does not affect the volume of a recording in the Eko App running on your mobile device. Playback volume must therefore be adjusted in the App or on the smart device itself.
Yes, the stethoscope can be laser engraved. We do not recommend scratch engraving as this can increase frictional noise during auscultation. Do not disassemble the stethoscope in any way (e.g., pulling the tubing apart, unscrewing the tubing stems).
To connect with service and support in the USA for the Littmann CORE Digital Stethoscope, please visit littmann.com/service or call 1-800-228-3957. Press option 1 for Littmann, then option 2, then option 1 for 3M Littmann CORE Support.
If you are outside of the USA for the Littmann CORE Digital Stethoscope, please visit littmann.com for the contact information of your local 3M office.
In Europe, the Middle East, or Africa for the Littmann CORE Digital Stethoscope, contact your local 3M office or email 3M.littmann.emea@mmm.com
In Canada for the Littmann CORE Digital Stethoscope, please email CAService@mmm.com or call 1-800-268-6235.
Globally for the CORE Digital Attachment, please visit support.ekohealth.com.
To connect with service and support in the USA for the Littmann CORE Digital Stethoscope, please visit littmann.com/service or call 1-800-228-3957. Press option 1 for Littmann, then option 2, then option 1 for 3M Littmann CORE Support.
If you are outside of the USA for the Littmann CORE Digital Stethoscope, please visit littmann.com for the contact information of your local 3M office.
In Europe, the Middle East, or Africa for the Littmann CORE Digital Stethoscope, contact your local 3M office or email 3M.littmann.emea@mmm.com
In Canada for the Littmann CORE Digital Stethoscope, please email CAService@mmm.com or call 1-800-268-6235.
Globally for the CORE Digital Attachment, please visit support.ekohealth.com.